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Reports modifications of variables with a simple assignment (such as <code>y = y + x</code>) that can be replaced with an operator assignment.
<p>The quick-fix replaces the assignment with an assignment operator.</p>
<p><b>Example:</b></p>
<pre><code>
  fun foo() {
      val list = mutableListOf(1, 2, 3)
      list = list + 4
  }
</code></pre>
<p>After the quick-fix is applied:</p>
<pre><code>
  fun foo() {
      val list = mutableListOf(1, 2, 3)
      list += 4
  }
</code></pre>
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